DNS Insights
Three DNS-specific Insights are available, under Insights > DNS. These isolate pertinent DNS metrics and eliminate any need for manual packet analysis when investigating DNS-related issues.
◼ DNS Servers – This Insight summarizes DNS traffic across all visible DNS servers, including:
– Response Time – The time elapsed from when a request was issued to when its response is received.
– Response Time (P95) – The response time in the 95th percentile of queries.
– DNS Timeouts – The number of queries that have timed out.
– All Errors – Queries that had any unsuccessful error code.
– DNS Servers – The number of DNS servers visible.
– All DNS Traffic – A time series chart for all visible DNS servers. By default, the number of DNS timeouts is graphed.
– Slowest DNS Servers table – A table of visible DNS servers with the worst response times.
– DNS Servers With Errors table – A table of DNS servers with the most errors.
– DNS Servers With Timeouts table – A table of DNS servers with the most timeouts.
◼ DNS Server – This Insight shows data for a specified DNS server:
– Server IP Address – The IP address of the specified DNS server.
– Response Time – The time elapsed from when a request was issued to when its response is received.
– Response Time (P95) – The response time in the 95th percentile of queries.
– DNS Timeouts – The number of queries that have timed out.
– All Errors – Queries that had any unsuccessful error code.
– DNS Clients – The number of DNS clients visible.
– DNS Requests & Responses – Listed in a table.
– Response Time True Plot – A time chart of the response times.
– DNS Timeouts – The number of queries that have timed out.
– DNS Errors – The number of times a DNS packet is malformed or abnormal in some way.
– DNS Queries By Location – This lists the locations from which DNS queries originate.
– Top Queried Domains – This lists the most queried domains.
– OpCodes – This lists the DNS op codes issued to the server.
– Query Types – This lists the query types.
◼ DNS Transactions – This Insight shows data for DNS transactions that match specified filter criteria:
– Response Time – The time elapsed from when a request was issued to when its response is received.
– Response Time (P95) – The response time in the 95th percentile of queries.
– DNS Timeouts – The number of queries that have timed out.
– All Errors – Queries that had any unsuccessful error code.
– DNS Servers – The number of DNS servers visible.
– DNS Errors – These are shown in a pie chart.
– DNS Response Time – This is shown in a time series chart.
– DNS Transactions tab – This shows the slowest DNS transactions.
– DNS Timeouts tab – This shows DNS timeouts and timed out DNS queries.
– Query Names tab – This shows the top query names and the corresponding DNS response times.
– Client Groups tab – This shows the top DNS client groups and the corresponding DNS response times.
– Client IPs tab – This shows the top DNS client IP addresses and the corresponding DNS response times.
– Server IPs tab – This shows the top DNS server IP addresses and the corresponding DNS response times.
– OpCodes tab – This shows the top op codes issued to the server and the corresponding DNS response times.
– Query Types tab – This shows the top query types and the corresponding DNS response times.
– GeoMap tab – This shows DNS requests and response times by location.